Welding apparatus



Sept. 15, 1936.

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Sept. 15, 1936. Q HALLE 4 WELDING APPARATU Filed D ec. 2, l929 6 Sheets-Sheet 4 Sept. 15, 1936. HALLE WELDING APPARATUS Filed Dec. 2, 1929 6 Sheets-Sheet 6 MN t I l G N Q14 ll ll ll/Al l NFQQQQQQQQ Patented Sept. 15, 1936 UNITED STATES PATENT OFFICE Bobbe Kalle.

Application December 2, 1929, Serial No. 411,138

11 Claims. (01. 78-85) This invention relates to, welding apparatus and is more particularly an improvement upon the structure disclosed in my Patent 1,775,311, dated September 9, 1930.

One of the objects of the invention is to provide a means whereby a length of pipe can be properly aiined and thereafter readily drawn toward the part to which it is to be joined.

Another object is to provide novel anti-friction means for guiding the pipe during its movement I toward the part to which it is to be welded.

A further object is to provide simple and emcient means whereby the apparatus can be joined to pipes of different diameters.

Another object is to provide a means whereby the welding head can be reciprocated during the welding operation so as to distribute the heat over as wide an area as desired.

A still further object is to provide the apparatus with adjustable carriages by means of which it can be moved from one point to another alon a pipe line.

With the foregoing and other objects in view which will appear as the description proceeds, the

invention resides in the combination and ar-. rangement of parts and in the details of conapparatus, parts being broken away and the apparatus being assembled with a pipe.

Figure 2 is a section on line 2-2, Figure 1. Figure 3 is a section on line 1-3, Figure 1. Figure 4 is an enlarged section on line 4-4, Figure 2. 2

Figure 5 is a section on line H, Figure 1.

Q Figure 6 is a perspective view of the rollercarriage and its parts separated.

Figure 7 is a front elevation of the welding head frame with its cover plate removed and parts broken away. a

Figure 8 is a perspective view of the pin carjusting screw being separated therefrom but shown therewith.

Figure 11 is a detail elevation of the pipe clam a portion being in section, the pipe on which it is mounted being also in section.

Figure 12 is a side elevation of the pipe clamp.

Figure 13 is an enlarged section'on line ili3, Figure 11.

Figure 14 is a perspective clamping jaws carried by the clamp.

Figure 15 is a longitudinal section through the ball bearing mounted on one of the pins and carrying the welding head.

Figure 16 is a view partly in end elevation and partly in section showing a portion of the remov- 15 able head of the bearing.

welding head.

Figure 18 is a side elevation of one of the braces used with the yoke.

Figure 19 is a front elevation thereof.

In constructing the apparatus, four units are provided, namely, a welding had frame, a welding head, a pipe alining frame, and a pipe clamp. These have been indicated at A, B, C, and D, respectively, and, in Figure 1, have been shown properly assembled on pipes Fand P which are to be joined.

The welding head frame is formed of two 011- posed yokes i and 2 the ends of which are connected by hinge bolts I either orboth of which can be removed readily whereby the yoires can be completely separated or can be swung apart when it is desired to place them in position around a pipe or to remove them therefrom. The two yokes are duplicates and each of them is provided with a pair of radial extensions 4 having I a radial arm 5 projecting from each extension. 1 Each of the extensions 4 is recessed to provide a pin housing 0 and a clamp housing I, there being a threaded opening 8 in the outer end of each housing 8 and another opening 9 in the outer end of each housing]. I

Seated in each clamp housing I is a clamp jaw II in the form of-a block adapted to slide longitudinally of the housing and provided along its inner exposed face with teeth H designedto bite into the outer surface of the pipe 1-", with. which the welding head frame is assembled. A screw i2 is swiveled in each opening 9 and engages a threaded bore 13 in each jaw I ii. Thus by rotating each screw l2, its jaw can be adjusted inwardly against the pipe P or can be withdrawn from engagement with the pipe. Obviously, in

this way, the .welding head frame A can be tightly to view of one of the securedtothepipesoastobeheldagainst movement longitudinally thereof.

Cover plates It are arranged upon the faces oftheextensionslandareusedforretaining the jaws ll against displacement relative to their In each of the housings O is located a pin-carriage or block ll having a bore a extending-from end \to end thereof and intersected atthe. center by the counterbored end ll of a bore l8 opening throughthatsurfaceofthecarriagenearestthe.

opening 8. The head it o! a. bolt "is seated in the inner portion of the counter-bore and thls bolt is adapted to extend through the opening 8 the thread of which is engaged thereby. The projecting end of the bolt is made angular as shown at 2| for engagement by a wrench.- Thus by turning the bolt the carriage I! can be adjusted toward or from the opening I. I

A bearing pin 22 is extended from each carriage II. This pin has a collar "and one end portion of the pin, indicated at 24, is adapted to fit in the bore It where it can be held by a nut engaging one end of the pin. Pin 22 extends through the cover plates I4 and canbe used for clamping them against the extensional. It will beobvious. however. that the openings provided inbefore for the pin in the cover plates must be sumciently large to permit radial adjustment of them- .riages II and the pins carried thereby.

If desired, and as shown in Figure 1, a ventilation sleeve II can be extended from one side of the welding head frame A between the pins 22.

. This sleeve 2' can be made concentric with the cover plates I4 and can be made of two semicylindrical sections adapted to open apart when theframeAis opened andto close iogetherwhen the frame is closed about the pipe P.-

TheweldingheadBisformedoftwoopposed sections It adapted to abut at their ends to form a split ring. Each section is cored for the distribution of fuel therein and the ends of the sections may be held together by any suitable means provided for that purpose. One such means has been disclosed in my co-pending application herementioned and it has not been deemed to show or describe the same in detail in the present case.

For the purpose oi" mounting the welding head so that it can be shifted toward or from thewelding head frame A and also be rotated, bearings of novel construction are mounted on the respective pins 22. Each of these bearings includes a cylindrical cage 21 provided at its ends with annular 28. Parallel longitudinal seriesofballsflareseatedin thecageandproiect inwardly and outwardly therefrom. The inwardacme-1s Ayohellisweldedononefaeeofthe'head Bandhasbra'cesflweldedtheretoandtothe head,thesebracesbeingsoshapedastoextend outside of the ventilating sleeve 1' and between theadjacentburnertips. Abracketli extends from the yoke 33 and is pivotally connected to oneendoi'anoperatingleverfl. Thisleveris fulcrumed at II on a sleeve 38 which, in turn, isrotatablymountedonatierodllbetweencollarsllearriedbytherod. Thetierodisextended from one of the arms I. Obviously by swinglnglever ll relativetosleeve 38 the welding headcanbemovedback andforth'along the pins 22, carrying with it-the cages 21. Thus the tips of the burners can be reciprocated relative to thepipes being treated. By-swinging lever It laterally,thesleeve3lwillberotatedbackand forth and'the welding head can thereby be given a slight back and forth rotationduring the welding operation.

Eachofthearmsi'oftheframeAhas'atie rod extending from it. These rods arejalli parallel and have their ends screw-threaded as shownat ll. Therodsaresecurelyfastened-by nutsllintheouterendsofarmsi. Theother endsoftherodsareoonnectedtothepipealiningframeC.

.As-shown particularly in Figure 5 the ipe alining frame includes opposed yokes 43 and, 44 connected at their ends by hinges 4!. Either orboth of these hinges can be separated by its bolt It so that itis thus possible readily-to place the frame 0 about the pipe tobe joined to the assembled portion of a pipe line. Each of the sections or yokes l3 and M has a pair of extensions ll radiating therefrom and each ex tensionisasat ll toprovidea housing for a carriage II. This carriage includes a block havingachannel II andathreadedbore ll opening into the middle portion of the channel; Roll-' ers I! are Journaled in the end portions of the channel while the bore II is engaged-by an I adiustingscrew it. Thisscrewhasacollar. adapted to be seated in the end-of therecess 4t andalsohasastem I! projecting through an. opening It in the outer-end oftherecess. The endofthestemismadeangularsothatitcanbe engaged by a wrench androtated readily to-feed the carriage ll toward or. from the pipe P onwhich the frame 0 is adapted to be mounted: Armsllradiatefromtheyokeslland andare made integral with the extensions l1. Rods I! aresecuredtotheouterendsofthesearmsflso' arms N areconnectedbyrods II to the lugs-l9,

Theconneetionbetwemthecableandearsilcan. beofsuchjanahrreastopermitslacktobetaken np-in the cable aiter said'cable has been placed: in t with'a hook I. carried by lever-ll. -Bachoftbeyoku0landlllmsapairofre in which are seated 01mm laws 10 inpiace by screws II. These laws are .tobindfllhtbm-andbiteintop p whentheclampieassembledtherewith.

The free end of yoke 80 has spaced links 12' pivotally connected thereto and pivotally mounted between these links is a lever I3 the end of which is pivoted at 14 'to an ear 1! outstanding from the free end portion of yoke 6|. Thus it will be seen that when lever I3 is swung in one" direction it will close the yokes tightly about the pipe 1? and cause the jaws III to bite 'thereinto. Howeve when the lever is swung in the opposite direction, the yokes will be swung apart and will release the jaws from the pipe.

As is well'known to those skilled in the art it is necessary, when laying pipe lines such as used for conducting gas over extensive areas, to join 'thepipes by welding them. Several lengths of pipe have been assembled end to end and connect- It has been necessary to carefully roll the pipes during the welding operation so as to keep them in proper alinement. After several sections have thus been Joined they are brought bodily into position against and in alinement with the length of pipe previously operated on and then, by means of blow torches, a joint is-made. This operation is .very slow and laborious and is dimcult to perform accurately. Furthermore it requires the use of a gang of approximatelyflfty men.-

' The present apparatus is designed to overcome the objections heretofore present in laying overland pipe lines for natural gas and the like. In

using the apparatus the frame A is placed about the fixed pipe P with the ventilating sleeve extending close to the end of the pipe and the tips of the burners directed toward said end, it bein understood, of course, that the welding head B is mounted on the guide pins 22.

Thereafter pipe P' is placedln the alining frame 0 through which it can move readily upon the rollers 52. Clamp D is secured to-the pipe and by -shifting lever 85 the two pipes can be caused to I m. frame A. Thus the clamp D will draw pipe P longitudinally so as to insure proper joining of the pipes while the metal is beingv fused. This shifting ofthe lever can be effected by a direct pull thereon or by means of the take-up provided for the cable 6. As before explained, any suitable means can be used for taking up the cable.

' After the. parts have been joined as explained the laws in the frame A are retracted from engagement with pipe P and the clamp D is disenaged from pipe P. The entire apparatus is then drawn-bodily along the joined pipes until it is brought to theposition first described whereupon the operation can be repeated.

What is claimed is: l.- A portable apparatus for fusing together the ends of pipe line sections, including a separable welding head frame for surrounding 9.

- pipe, means for fastening the same to a pipe line section, guide pins extending from the frame along lines parallel with thelaxis of the pipe,

the anti-friction devices and a connection operated by said means for shiftingthe welding head with said. devices along the pins.

2. A portable apparatus for fusing together the ends of pipe line sections including a separable welding head frame for surrounding. a

1 pipe line section, means for fixedly attaching it to a pipe line section, a separable ring-like welding head mounted'to slide and rotate relative to said frame, means extending from the frame for guiding it longitudinally of the pipe section during its sliding movement, a pipe alining element joined to the frame, anti-friction means therein for engagement by a movable pipe line section extending through said element, and means connected to the pipe alining element and to the movable pipe line section for shifting said movable section within the alining element and toward the welding head frame.

3. A portable apparatus for fusing together the ends of pipe line sections including a welding head frame, means for securing the same to a stationary pipe line section, an aliningframe, pipe-engaging anti-friction devices therein, means for tying together the welding head frame and the pipe-alining frame, means for gripping a movable pipe line section projectinginto the alining frame, means carried by the welding head frame for fusing the meeting ends of the pipe line sections, and cooperating means oh the alining frame and the section gripping means for feeding the movable section toward the sta-. tionary section during the fusing operation.

4. A portable apparatus for fusing together the ends of pipe line sections including hingedly connected yokes constituting a welding head frame for surrounding a pipe line section, jaws adjustably mounted in the yokes for gripping said pipe line section, means for holding the yokes against relative movement, blocks adjustably mounted in the yokes, guide pins extending therefrom, anti-friction bearings mounted to slide and rotate on the pins,-a separable welding head for encircling the pipe line section and mounted to rotate on the bearings and to slide therewith, means for rotating the welding head and a connection operated by said means for sliding the welding head.

' 5. A portable apparatus for fusing together pipe line sections including a sectional welding head frame adapted to embrace and to be fixedly attached to a stationary pipe line section, a clamp adapted to engage a movable pipe line section, an alining frame formed of sections adapted to embrace the movable pipe line sec-- tion, anti-friction means therein for guiding said section, a connection between the welding head frame and the alining frame, an operative con-'- nection between the alining frame and the clamp for shifting the movable pipe line section against the stationary pipe line section, and means carried by the welding head frame for fusing the meeting ends of the pipe line sections.

6. A portable apparatus for fusing together the ends of pipe line sections, including a separable welding'head frame fo surrounding a pipe line section, means for fastening the same to a pipe line section, annularly spacedv guide pins extending from the frame and parallel with the axis of the section, anti-friction devices adapted to roll about and longitudinally of the respective guide pins, a separable ring-like welding head for surrounding the pipe line section and mounted -on and centered by the anti-friction devices, means for rotating the welding head on the anti-friction devices and about the guide pins and a connection actuated by said means for shifting the welding head and the anti-friction devices longitudinally ed the guide '1. A portable apparatus for fusing together the ends of pipe line sections including a member for attachment to one section of a pipeline, a clamp for attachment to another section, a separable aliningframe interposed between said member and the clamp for encircling and guidjing the pipe section engaged by the chmp,

means extending from said member for holding the alining frame fixed relative thereto, a welding head for encircling one pipe line section and supported between said member and the alining frame for fusing the meeting ends'of the pipe sections, said welding head being rotatably mounted relative to the member, and means connecting the clamp and the alining frame for feeding one of the pipe sections toward the other during the fusing operatim.

8. A portable app atus for fusing together the ends of pipe line sections including annularly spaced parallel guide pins, separable means for surrounding a pipe and coupling the 9; A portable apparatus for fusing like welding head frame for surrounding a.-pipe line section, means for clamping the same upon said pipe 'sectionyannularly spaced guide pins connected to said frame and adjustable radially of and relative to the frame, said pins being parallel, a ring-like welding head for surrounding the pipe section and mounted to rotate on and to slide longitudinally of. the pins, mean for rotating the'welding head, a connection operated by said means for sliding the welding head, and means for drawings pipe line section towardthesectiononwhichtheframeis mounted.

10. In a machine for welding together the meetingends ofpipes and thelihe, aearriage, means for mounting the'carriage for movement upon and longitudinally of the pill a welding mechanism, means for mounting the welding mechanism upon the carriage for rotation about the pipes, and means for rotating the weldim mechanism as aforesaid.v

11. In a machine for welding the meeting ends of pipes or the like, a carriage. means for mounting the carriage for movement longitudinaliy ot the pipes, a rotary member iournalled onthecarriageanddisposedabouttheiiima welding mechanism on the rotary member, and means for rotating the rotary member-to cause the welding m to move circumferentially oi the pipes. BOBBE HALLS. 

